81976268788980272

Names of 81976268788980272

• Cardinal: 81976268788980272 can be written as Eighty-one quadrillion, nine hundred seventy-six trillion, two hundred sixty-eight billion, seven hundred eighty-eight million, nine hundred eighty thousand, two hundred seventy-two.

Scientific notation

• Scientific notation: 8.1976268788980272 × 10¹⁶

Factors of 81976268788980272

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1315

Divisors of 81976268788980272

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 4 7 8 14 16 28 49 56 98 112 196 392 587 719 784 1174 1438 2348 2876 4109 4696 5033 5752 8218 9392 10066 11504 16436 20132 28763 32872 35231 40264 57526 65744 70462 80528 115052 140924 230104 281848 344569 422053 460208 516961 563696 689138 844106 1033922 1378276 1688212 2067844 2411983 2756552 2954371 3376424 3618727 4135688 4823966 5513104 5908742 6752848 7237454 8271376 9647932 11817484 14474908 16883881 19295864 20680597 23634968 25331089 28949816 33767762 38591728 41361194 47269936 50662178 57899632 67535524 82722388 101324356 135071048 165444776 202262003 202648712 247745111 270142096 303456107 330889552 404524006 405297424 495490222 606912214 809048012 990980444 1213824428 1415834021 1618096024 1734215777 1981960888 2124192749 2427648856 2831668042 3236192048 3468431554 3963921776 4248385498 4855297712 5663336084 6936863108 8496770996 9910838147 11326672168 12139510439 13873726216 14869349243 16993541992 19821676294 22653344336 24279020878 27747452432 29738698486 33987083984 39643352588 48558041756 59477396972 79286705176 97116083512 118954793944 145426380157 158573410352 178128734809 194232167024 237909587888 290852760314 356257469618 581705520628 712514939236 1017984661099 1163411041256 1246901143663 1425029878472 2035969322198 2326822082512 2493802287326 2850059756944 4071938644396 4987604574652 7125892627693 8143877288792 8728308005641 9975209149304 14251785255386 16287754577584 17456616011282 19950418298608 28503570510772 34913232022564 57007141021544 69826464045128 104561567332883 114014282043088 139652928090256 209123134665766 418246269331532 731930971330181 836492538663064 1463861942660362 1672985077326128 2927723885320724 5123516799311267 5855447770641448 10247033598622534 11710895541282896 20494067197245068 40988134394490136 81976268788980272
• Sum of all divisors σ(n): 185333345005261320
• Sum of proper divisors (its aliquot sum) s(n): 103357076216281048
• 81976268788980272 is an abundant number, because the sum of its proper divisors (103357076216281048) is greater than itself. Its abundance is 21380807427300776

Bases of 81976268788980272

• Binary: 100100011001111001111101101101101001011011101101000110000₂
• Hexadecimal: 0x1233CFB6D2DDA30
• Base-36: MF65TZKF5M8

Squares and roots of 81976268788980272

• 81976268788980272 squared (81976268788980272²) is 6720108644563141070859661605193984
• 81976268788980272 cubed (81976268788980272³) is 550889432537857941603576973397919311465618109083648
• The square root of 81976268788980272 is 286314981.7752823635
• The cube root of 81976268788980272 is 434406.2340425619

Scales and comparisons

• 81,976,268,788,980,272 seconds is equal to 2,606,591,778 years, 12 weeks, 3 days, 20 hours, 44 minutes, 32 seconds.
• To count from 1 to 81,976,268,788,980,272 would take you about seven billion, eight hundred nineteen million, seven hundred seventy-five thousand, three hundred thirty-four years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 81976268788980272 cubic inches would be around 36200.5 feet tall.

Recreational maths with 81976268788980272

• 81976268788980272 backwards is 27208988786267918
• 81976268788980272 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 81976268788980272's digits is 98
• More coming soon!